Safety air gun



FIG. 1 is a perspective view of a safety air gun showing the design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation view thereof, the right side being a mirror image thereof;

FIG. 5 is a front elevation view of the design; and,

FIG. 6 is a rear elevation view thereof. 

The ornamental design for a safety air gun, as shown and described. 